Subtract 2/90 from 54/7, Solve 7 5/7

Subtract 2/90 from 54/7

1^st number: 7 5/7, 2^nd number: 2/90

54/7 - 2/90 is 2423/315.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 7 × 90 = 630,
54/7 = 54 × 90/7 × 90 = 4860/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
2/90 = 2 × 7/90 × 7 = 14/630
Subtract the two like fractions:
4860/630 - 14/630 = 4860 - 14/630 = 4846/630
After reducing the fraction, the answer is 2423/315
In mixed form: 7218/315

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